From: http://www.thesoccerhooping.com/2015/12/suarez-injures-valencia-defender.html

Controversy during the match between Barcelona and Valencia as Barcelona's striker, Luis Suarez, appears to have stomped on Valencia's defender, Aymen Abdennor. Both players were struggling to get the ball as luis Suarez took some steps backwards, lost his balance and Abdennor could be seen going to the ground in pains. No cards were given to either player as the referee did not have a clear glimpse of the incident. Abdennor later shared the pics of the cut on his foot as a result of the incident.

Photo Credit:
Facebook/AymenAbdennour
Getty Images